The importance of environmental influences on intelligence is provided by evidence that:
a. fraternal twins have more similar intelligence test scores than ordinary siblings.
b. intellectual development of neglected children in impoverished environments is often retarded.
c. Head Start programs for disadvantaged children lead to short term improvements in intelligence test scores.
d. all the above are true.
Answer: d. all the above are true.
You might also like to view...
A newspaper headline heralds a finding that an excess of a particular brain chemical is the cause of a certain mental disorder. The article is not convincing to you. What potential flaw do you note in the report?
a. The chemical change could be due to other variables. b. Chemical changes cannot bring about changes in behavior. c. The genetic code associated with the chemical has not been identified. d. Such findings are very difficult to generalize to the entire population.
According to the chapter I Confessabout false confessions to crimes, high rates of key typing (67 letters
per minute) are equated to (a) high vulnerability (b) low vulnerability (c) rushing (d) high caffeine consumption